All standard, shrouded, multi-positional and stainless-steel gas struts are available in a VARI‐LIFT version which can be adjusted to meet individual preferences as well as being adjusted in‐situ.

### How are gas strut positions determined?

The force required to hold the lid open (F1) can be calculated using the formula: Gas Spring Force (F1) = Mass of lid x Centre of Gravity / Radius of Force x Number of Springs. The calculations show that the closer towards the hinge the moving mounting point gets, the higher the opening force required.

Reducing Gas Spring Force Gas springs fitted with release valves can be easily adjusted with our Gas Release Tools. Prior to releasing gas from a gas spring, ensure that the end fitting (e.g. eye or ball joint) is removed and the rod is facing down.

### Are gas struts measured open or closed?

The compressed length of a gas strut is when the gas strut is completely closed. Normally when the window or door is closed and can be measured pretty easily when a gas strut fails because it no longer has any Newton Meters (force) left in so the gas strut will be very easy to push closed.

### What strength gas strut do I need?

To calculate the size and the force of the Gas Strut you require for your application use the following guidelines. The extended length of the Gas Strut should be approximately 60% of the door or hatch length - e.g. a 1000mm high door should have a Gas Strut length of approximately 600mm.

### How do you depress gas struts?

1:282:57#653 Two Minute Tuesday - Tip For Fitting A Gas Strut - YouTubeYouTube

### How do you measure and fit gas struts?

How to Measure

1. Step 1 – Extended Length. Measure the gas strut from middle of end fitting to the middle of the end fitting when gas strut is fully extended.
2. Step 2 – Diameter. Measure across the Rod/Shaft. ...
3. Step 3 – Newton Meters or Force. ...
4. Step 4 – End Fittings. ...
5. Step 5 – Order your Gas Strut.

### Are gas struts constant force?

Whether displaced in tension or compression, gas springs provide a nearly constant force through their entire stroke as compared to coil or leaf metallic or composite springs. They can also be constructed with special features such as variable damping and blocking.

### How do I know what size gas struts I need?

In general the length to choose for gas struts is about 55% of the height of the door you are trying to keep open. So if you have a door that is 1000mm in height a 550mm long gas strut would be about right. In simple terms we are talking half the door height plus a bit when determining optimal gas strut length.

### How does an adjustable force gas strut work?

Adjustable force gas struts come pre-set to the maximum force the gas strut is rated to. There is a release valve at the end of the strut which allows gas to be vented out of the strut, lowering it's force. This allows fine tuning while the gas strut is still mounted to achieve the perfect operation.

### What are the drawbacks of a gas strut?

The main drawback of this mounting position is the additional strength required in the application being lifted, particularly the hinge; this is due to increased cantilever of the lid from the support provided by the strut.

### Can a gas strut be replaced at the same time?

Have an assistant support the panel for you so that the liftgate, hood, trunk and /or lid to full extension of gas strut. The application is held open as the gas strut is being replaced. If the application has 2 gas struts, one gas strut does not have enough output force to hold open the application.

### What should the crossover be for a gas strut?

Gas Spring and gas strut installation handling forces chart. Crossover at 20 degrees Celsius. Angle of opening (Degrees) vs. force (N). Gas Spring and gas strut installation handling forces chart. Crossover at 65 degrees Celsius.